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12Cr1MoV 钢小口径管是我厂用于制造580℃以下工作的高压锅炉过热器材料,由有关钢厂按 YB529-70标准供货.从几年来的检验结果来看,供应的这些12Cr1MoV 钢小口径管的化学成分、机械性能及金相组织大都符合标准要求。但发现某钢厂供应的有十几批料(规格分别为
12Cr1MoV steel small-diameter pipe is our factory used to manufacture high-pressure boiler superheater material below 580 ℃, according to YB529-70 standard steel mills supplied from the test results over the years, the supply of these 12Cr1MoV steel small diameter Tube chemical composition, mechanical properties and microstructure mostly meet the standard requirements. However, there are more than ten batches of materials found in a steel mill (specifications are respectively